[gjs: 1/2] Fix leak when virtual function is unimplemented.

[Philip Chimento <pchimento src gnome org>]

commit 293e2082b878969cd5269fff5b05931cc494702d
Author: Evan Welsh <noreply evanwelsh com>
Date:   Tue Sep 8 14:29:30 2020 -0500

    Fix leak when virtual function is unimplemented.

 gi/function.cpp | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gi/function.cpp b/gi/function.cpp
index 1b065b598..91bf51ae4 100644
--- a/gi/function.cpp
+++ b/gi/function.cpp
@@ -1222,6 +1222,7 @@ init_cached_function_data (JSContext      *context,
 
             gjs_throw(context, "Virtual function not implemented: %s",
                       error->message);
+            g_clear_error(&error);
             return false;
         }